If i had a five channel amp 4 channels at 4 ohms to 4 speekers 75w each and one sub channel is 300w at 4ohms but i have two subs that are 4 ohms each and requre a little bit more power, about 200 each should i get another amp or is it ok to just hook both subs to the one channel. . . and just make due with the slight power loss? or will i just increase that one channel now to 8ohms? my goal is i wanna run all four mids and both subs with one amp. . . but i cant find an amp with two sub outs. . .
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Re: is it a good idea
Based on your description and on the idea of a single amp, then your plan of hooking up both the subwoofers in series (to get 8 ohms) would be the safest as against running the subs in parallel (2 ohms). This way the sub amp would not be overly loaded, you can compensate the slight loss in power by strategically positioning the 2 subs. A friendly reminder, pls observe polarity when hooking the sub speakers.
Hope this be of initial help/idea. Pls post back how things turned up or should you need additional information.
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I'm using that Alpine right now for 2-12" subs and I have compared it to 6 or 7 other amps this month and most were 4 channel 150Watt/Channel Bridged to 300Watts x 2 and found the Alpine to be superior in both sound quality and loudness. The Alpine has also not turned off even with full volume for hours at a time, Very solid amp I was very surprised due to it's size!
I would be more worried about the amp than the speakers, those subs should handle the watts with no problem. The problem will be in the amps ability to remain working with a bridged 2 ohm load. It may not even stay on without going into protect mode with a 2 ohm load. If it does stay on then it may get really hot and shut off from the heat off of the Mosfett Transistors, or it could burn the Mosfetts from driving them too hard. Basically it's your choice, run your amp hard and gain more volume or run it with slightly less sound and have a cleaner sounding more stable amp that will stay on and have less chance of being damaged. If it's not loud enough the best thing to do is buy a different amp that better suits your needs and fits the application. In your case a 2 ohm stable Mono amp is going to be your best bet or a 4 channel amp bridged into 2 channels and run with 4 ohms on each channel. Or another exact matching amp like your 2 channel amp bridge them both and have each powering 1 of your 4 ohm subs. I used two VR mono amps to power my two 12" 4 ohm subs for a few years
match your total rms output at the resistance you will be running the amp at to the subs.
if your amp puts out 300w RMS@ 4ohms, then it will produce 600w RMS@ 2ohms. half the resistance, double the power.
So now that you know your available power, you should get speakers that will be used to the fullest at that given resistance.
If you have two 4 ohm subs that have a power handling of 300 watts, Then you can wire them in parallel ( + to + and - to -) to get a 2 ohm load (which will be 300w per sub with the above amp) or in series (+ to - to + to -) to get an 8 ohm load. (300w amp @ 4ohms = 150w amp @8ohms = 75 per sub).
Keep in mind: choose the speakers to fit the amp, not the amp to fit the speakers. If the amp has more power than the speakers can handle, you will blow them. and ALWAYS USE RMS WATTAGES.
You cant bridge it to the MONO AMP . You can only bridge subs & speakers to 2 CH & 4 CH AMPS that are bridgeable. Because if it appears that there is 2 channels on a Mono amp its so its convenient for you to hook up 2 4ohm subs to it easily But both channels are actually connect internally together in parallel inside the amp unlike a 2 channel they are separate.
So just connect your mtx 9500 to a plus and a minus and doesnt matter which since all the + terminals of are connected together and - are connected together already.
Whats important is on the side of the sub/box it reads 2 ohms. The lower the ohms the more power the Mono amp will put out. Mono amps are designed to handle 2ohm loads.
If it reads 4ohms The MONO amp is the wrong amp to use cause the power will be weaker. So if you have a 1000 Watt Mono amp at 4ohms the sub will only get 500 WATTS Max while a 2 ohm will get the full 1000 Watts.
If it reads 4 ohms connect it to a 2CHANNEL AMP and BRIDGE IT (connect + of the sub to 1st channels positive of the amp then connect - of the sub to 2nd channels negative of the amp) . The power will be doubled when you bridge it on a 2 channel amp. NOW if it was a 2 ohm sub and you bridged it to the 2 channel amp it will fry the subs and ruin the amp. 2 CHANNELS CANT TAKE A 2OHM LOAD BRIDGED OK.
if the amp has a 2 outputs then i would wire the two 4ohms together, and the 2ohm by itself. and if its a 4 channel output then wire them all sepretly, if its a 1 channel output then wire the two 4ohms together and leave the 2ohm sub out
Max 200 W. You could bridge 2 channels of a 4 channel amp (or get a 2 ch amp and bridge it) and connect the sub. Bridging = connect + of sub to + of one channel, and connect - of sub to - of *other* channel. Check amp manual for instructions.
Don't get a mono - most are 300W or more - might burn the coil during loud passages.
HOW do you have it wired and what is the ohms rated on the subs and is this amp bridgeable and at what ohms is it stable at Do you have it Bridge to the subs to lower the ohms( Series or in Parallel) Is the amp running hotter the normal and do you have it in a well ventilated are of your car/truck Most car audio or at 4ohms and also is the subs dual
On page 6 of the manual it states you should use a powered subwoofer and the unit provides a sub output on the rear panel for it. The message from the amp kicking out is that you're not going to get away with your workaround.
I would advise you to purchase a nice amplifier (2-channel bridgeable or single channel) for the subwoofer. That way you'd be sending only LFE signals and your receiver has provisions for adjusting its volume relative to the rest of the channels. I use a nice 5-channel Carver for my 3 subs and both Rear Surrounds.
On eBay I see what I would get if I were you - a Carver M-200T (120W x2; 300W bridged). I have one.